This is actually correct. Your SR is NOT used at all, you have MMR. However, MMR is not something that differentiates “good” and “bad” players at the same SR. So if you play solo and all your teammates and opponents are all solo and you are all at SR 2100-ish, then you all have close to the same MMR unless you’re playing at some ungodly hour and you’re mixing silvers, golds, plats, and diamonds into the same game because there’s literally no one else queueing at the time.
The matchmaker does not actually give a damn how you all got to where you are. It just sees 12 players with the same MMR and you’re thrown into the game together, shuffled into random teams and does not even recognize the concept of “good player of X SR” or “bad player of X SR”
Read this, especially the references.
No one’s saying the system is perfect, because this game is balanced FIRST AND FOREMOST for organized 6v6 play. Clans-only is the proper way to play this game.
Your entire posting history between your Zelda and your Kapoof accounts are basically nothing but complaining about getting “the worst teammates” every time you say you become the hot player. And then even went on to deny that better players would win in your situation. That’s quite the sign of an inflated ego.
You already know about the two players that tried to “prove” via VOD review that the matchmaker intentionally gives them bad teammates for winning to much, and all they proved is that they were bad teammates and quick tilters, so I’m not going to post it again. Factoring in your posting history, you need to explain to us why you actually are different than those two.